1. To think of something; such as, a new idea, a plan, or a design.
2. To imagine something or to think of doing something.
3. For a female, to become pregnant with an offspring, a baby, or babies: "I can't conceive that a woman of 90 could conceive, but the Bible says that Sara gave birth to Isaac when she was that age."
4. Etymology: from Latin concipere, conceptus, "to take in and to hold; to become pregnant"; from com-, "together, with" + capere, "to take".

1. Something that a person has thought up, or which anyone might be able to imagine: George had a new concept about how to set up a more efficient computer program for his customer.
2. A broad abstract idea or a guiding general principle: The anthropologist had concepts that determined how people or cultures behave and how human events are perceived regarding how primitive societies have evolved.
3. The most basic understanding of something: Geraldine's medical doctor had a concept that explained why she was feeling so bad and what could be done to cure her condition.
4. Etymology: from Latin concep-, stem of concipere, "to take in".

1. Relating to something that is based on an understanding that is in the mind from experience and one's imagination: The engineer defined a conceptual model of the tool before actually producing the real thing.
2. Etymology: from Latin conceptus, concipere; com-, "together, with" + capere, "to take, to form or to hold an idea".

1. To mislead or to deliberately hide the truth from someone: Shawn deceived his mother into believing he was going to school when he really went to a movie"
2. To convince oneself of something that is not true.